MCUXpresso Memory placement Error

[remibusseuil]

Hi All

I am having an issue with the memory mapping in MCUXpresso. I am using an LPC4088 and external flash and external RAM.

I am following the instructions of the MCUXPresso manual :

Setting the memory allocation and flash drivers

remibusseuil_0-1736797039455.png

remibusseuil_1-1736797107300.png

I declare my RAM  using __DATA(RAM3)

remibusseuil_2-1736797137884.png

And my External flash using __TEXT(EXT_FLASH)

remibusseuil_3-1736797228363.png

Somehow when I compile the program the linker puts the data of the external RAM in the external RAM AND in the internal flash...

remibusseuil_4-1736797449511.png

I am out of ideas on why it happens... Is this a bug? is this memory allocation actually working in the first place? 

Thanks for your help

Remi

[Habib_MS]

Hello @remibusseuil,

I still working in this issue, but I cannot solve it. However, if you import an LPCopen example you can configure more memory sections without problems.

BR
Habib

[Habib_MS]

Hello @remibusseuil,

Could you try open MCUxpresso as admin in order to see if it solves the issue?

BR
Habib

[remibusseuil]

Thanks!

[Habib_MS]

Hello @remibusseuil,
Did you solve the issue?
BR
Habib

[remibusseuil]

Hi No it is still a big issue

[Habib_MS]

Hello @remibusseuil,

In order to add new FLASH, you can follow two ways:

1. Via MCU settings:

Create a new RAM/FLASH in MCU settings, properties->C/C++ build->MCU settings:

Habib_MS_1-1742604490921.png

 Click on Refresh MCU cache:

Habib_MS_2-1742604517373.png

Click on apply and close:

Habib_MS_3-1742604546729.png

2. Click on Edit memory in Project settings->memory->Edit memory:

Habib_MS_4-1742604654881.png

Add a new FLASH and press OK :

Habib_MS_5-1742604766069.png

Finally, are you currently experiencing any other problems?

If the response is yes, do not hesitate to let me know

BR
Habib.

[remibusseuil]

additionnally I run into the problem of the memory allocation does not persist after a restart of MCUxpresso:

remibusseuil_0-1736801613895.png

Really what is happening? is this a pre pre alpha release?

[Habib_MS]

Hello @remibusseuil,
I followed the chapter 7 called "Creating New Projects using Pre-Installed Part Support" in the MCUXpresso IDE User Guide, and It works correctly, however I get the same error, when I close the project the memory regions defined disappears, this is because the linker file is not configured with the new regions. I will ask internally in order to obtain more information. Please take in mind that it could be a few days, thank you for your patience.
BR
Habib.

[remibusseuil]

To make it clear here i set an array bigger than the flash memory but smaller than the external RAM and the program cannot compile because it copies the memory of the RAM in the flash.........

remibusseuil_0-1736797817550.png